no obj.
1- look quickly and furtively at something, especially through a narrow opening（尤指从缝隙中）偷看, 窥探：
his door was ajar and she couldn't resist peeping in.
他的门半开着, 因此她忍不住向里偷看。
1.1
peep out
be just visible; appear slowly or partly or through a small opening隐现; 缓慢出现：the sun began to peep out.
太阳开始渐渐露出脸来。
usu. in sing.
1- a quick or furtive look窥视, 偷看; 一瞥：
Jonathan took a little peep at his watch.
乔纳森微微地瞥了一下自己的表。
1.1
- a momentary or partial view of something瞬间的景象; 不完全的景象：
black curls and a peep of gold earring.
黑色的卷发和若隐若现的金耳环。
词源
late 15th cent.: symbolic; compare with PEEK.
1
- a feeble, high-pitched sound made by a young bird or mammal（幼鸟或哺乳动物幼崽发出的）吱吱声, 啾啾声。
1.1
- with negative a slight sound, utterance, or complaint嘀咕声, 轻轻的抱怨声：
not a peep out of them since shortly after eight.
8点过后不久, 他们没再发出任何的嘀咕声。
1.2
- a brief, high-pitched sound produced mechanically or electronically（以机械或电子方式发出的）哔哔声：
the phone gives three sharp peeps.
电话发出三次刺耳的哔哔声。
1.3
- （一般作peeps）N. Amer. informal a small sandpiper or similar wading bird〈北美, 非正式〉唧唧鹬。
词源
late Middle English: imitative; compare with CHEEP.