'hold in' definitions:

Definition of 'hold in'

From: WordNet
verb
Close in; darkness enclosed him" [syn: enclose, hold in, confine]
verb
Lessen the intensity of; temper; hold in restraint; hold or keep within limits; "moderate your alcohol intake"; "hold your tongue"; "hold your temper"; "control your anger" [syn: control, hold in, hold, contain, check, curb, moderate]
verb
Hold back; keep from being perceived by others; "She conceals her anger well" [syn: conceal, hold back, hold in]